/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundFrontendRegistries.h
Returns true if the provided registry key corresponds to a valid registered node.
bool IsNodeRegistered ( const [FNodeRegistryKey](API\Plugins\MetasoundFrontend\FMetasoundFrontendRegistryContai-\FNodeRegistryKey) & InKey ) const